diff --git a/.gitignore b/.gitignore
index 12e779fe7c7..25080488a88 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,4 @@ perf.data.old
 /rand
 /regex
 /simple-raytracer
+/stdsimd
diff --git a/clean_all.sh b/clean_all.sh
index f4f8c82d69f..23e5bf2e0a8 100755
--- a/clean_all.sh
+++ b/clean_all.sh
@@ -3,4 +3,4 @@ set -e
 
 rm -rf build_sysroot/{sysroot_src/,target/,compiler-builtins/,rustc_version}
 rm -rf target/ build/ perf.data{,.old}
-rm -rf rand/ regex/ simple-raytracer/
+rm -rf rand/ regex/ simple-raytracer/ stdsimd/